SQL / Structured Query Language
'SQL (Structured Query Language) was developed at IBM by Donald Chamberlin and Raymond Boyce in the early 1970s'.
SQL now exists in most database packages including Access, dBase, MySQL, Oracle, PostgreSQL, SQL Server and Visual FoxPro.
Standardizing of database languages to include SQL enables conversions between database to be easier and also enables
programmers to write with different database packages without having to learn every last detail of the database package that is new to them.
PL/SQL stands for Procedural Structured Query Language and this is what Oracle uses for their databases such as MySQL and Oracle database.
T-SQL stands for Transact Structured Query Language and this is what Microsoft uses for their databases such as Access
and SQL Server.
PostgreSQL is a object relation database and it has it's own procedural languange called PL/pgSQL.
Insert-The insert statement in SQL allows for adding information into database tables.